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package p2p
import (
"fmt"
"net"
"strconv"
"strings"
"github.com/tendermint/go-crypto"
)
const maxNodeInfoSize = 10240 // 10Kb
type NodeInfo struct {
PubKey crypto.PubKeyEd25519 `json:"pub_key"`
Moniker string `json:"moniker"`
Network string `json:"network"`
RemoteAddr string `json:"remote_addr"`
ListenAddr string `json:"listen_addr"`
Version string `json:"version"` // major.minor.revision
Other []string `json:"other"` // other application specific data
}
// CONTRACT: two nodes are compatible if the major/minor versions match and network match
func (info *NodeInfo) CompatibleWith(other *NodeInfo) error {
iMajor, iMinor, _, iErr := splitVersion(info.Version)
oMajor, oMinor, _, oErr := splitVersion(other.Version)
// if our own version number is not formatted right, we messed up
if iErr != nil {
return iErr
}
// version number must be formatted correctly ("x.x.x")
if oErr != nil {
return oErr
}
// major version must match
if iMajor != oMajor {
return fmt.Errorf("Peer is on a different major version. Got %v, expected %v", oMajor, iMajor)
}
// minor version must match
if iMinor != oMinor {
return fmt.Errorf("Peer is on a different minor version. Got %v, expected %v", oMinor, iMinor)
}
// nodes must be on the same network
if info.Network != other.Network {
return fmt.Errorf("Peer is on a different network. Got %v, expected %v", other.Network, info.Network)
}
return nil
}
func (info *NodeInfo) ListenHost() string {
host, _, _ := net.SplitHostPort(info.ListenAddr)
return host
}
func (info *NodeInfo) ListenPort() int {
_, port, _ := net.SplitHostPort(info.ListenAddr)
port_i, err := strconv.Atoi(port)
if err != nil {
return -1
}
return port_i
}
func splitVersion(version string) (string, string, string, error) {
spl := strings.Split(version, ".")
if len(spl) != 3 {
return "", "", "", fmt.Errorf("Invalid version format %v", version)
}
return spl[0], spl[1], spl[2], nil
}
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